(Vitamin B-5) - Acts as a penetrating moisturizer. Panthenol appears to stimulate cellular proliferation and aid in tissue repair. The Vitamin B-5 action helps to impart a nonirritant; nonsensitizing, moisturizing, and conditioning feel and may help promote normal keratinization. Panthenol protects the skin against sunburn, provides relief for existing sunburn and enhances the natural tanning process. Its humectant character enables panthenol to hold water in the product or attract water from the environment, resulting in a moisturizing effect. As a skin softener it provides suppleness. Considered noncomedogenic.